Senior QA Lead: VoIP/SIP & API Testing, Release Governance

IDT Corporation

Warszawa

Hybrid

PLN 180,000 - 260,000

Full time

14 days+

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Benefits offered by this job

Remote/hybrid work opportunities

Long-term growth

Annual performance review

Quality hardware

Career development

Training/conference sponsorship

Referral program

English language classes

Job summary

IDT Corporation is seeking an experienced Lead QA Engineer to lead manual and integration testing for the Net2Phone UCaaS platform, focusing on REST/gRPC APIs and SIP validation. You will collaborate with Product Owners, define acceptance criteria, and shape release guidelines while contributing to performance testing and automation efforts where feasible.

The role emphasizes manual test execution, cross-team coordination, and end-to-end release orchestration, offering opportunities for growth

Qualifications

6+ Years in QA Engineering: Backend and API/Microservices testing (REST, JSON, gRPC).
2+ Years in VoIP / SIP Protocol Testing: Call flow verification, media, WebRTC, or telecom load tools.
SIP Tracing & System Diagnostics: Linux CLI and SIP tracing instruments (Hepic, CP Tools, tcpdump).
English Proficiency: Upper-Intermediate (B2) or higher (written and spoken).
Load & Performance Testing: Hands-on experience with load and performance testing tools (JMeter, Gatling, SIPp).
Build & Release Testing: Validating, testing, and promoting software builds through release cycles.
Programming & Automation Background: Java (11/17) and testing frameworks (JUnit5, TestNG, Gradle).

Responsibilities

Requirements Analysis & PO Collaboration: Partner with Product Owners to build robust requirement lists, refine acceptance criteria, and execute early-stage requirements testing before development begins.
Release Governance & Guidelines: Design, document, and standardize end-to-end release processes, quality gates, and deployment guidelines for the engineering team.
Lead Manual & Integration Testing: Plan and execute rigorous manual test cycles across microservices and REST/gRPC APIs to validate complex integration scenarios.
Manage Release Operations: Orchestrate deployment tasks, build triggers, and post-deployment verifications in Jenkins across testing and staging environments.
Test Case Architecture: Write, organize, and maintain detailed, step-by-step manual test cases and execution runs in Allure TestOps.
VoIP & SIP Validation: Conduct functional testing on real-call scenarios, media flows, and SIP protocol behavior under active network conditions.
Agile Quality Gateway: Participate actively in SCRUM ceremonies, manage defect lifecycles in Jira, and serve as the final quality sign-off for release candidates.